One of the most common phenol‐formaldehyde cyclic oligomers from hydroxyalkylation reactions that exhibit supramolecular chemistry are calixarenes. These macrocyclic compounds are qualified to act as synthetic catalysts due to their specific features including being able to form host‐guest complexes, having unique structural scaffolds and their relative ease of chemical modifications with a variety of functions on their upper rim and lower rim. Here, a functional magnetic nanocatalyst was designed and synthesized by using a synthetic amino‐functionalized calix[4]arene. Its catalytic activity was evaluated in a one‐pot synthesis of 2‐amino‐4H‐chromene derivatives. Besides, this novel magnetic nanocatalyst was characterized by spectroscopic and analytical techniques such as FT‐IR, EDX, FE‐SEM, TEM VSM, XRD analysis.

中文翻译：

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基于氨基功能化杯[4]芳烃的核壳磁性超分子纳米催化剂的合成，用于超声波合成4H-色烯。

具有超分子化学性质的羟烷基化反应中最常见的苯酚甲醛环状低聚物之一是杯芳烃。这些大环化合物由于其特定的特征而有资格充当合成催化剂，包括能够形成主客体配合物、具有独特的结构支架以及相对容易的化学修饰以及其上边缘和下边缘的多种功能。在这里，通过使用合成的氨基功能化杯[4]芳烃设计并合成了功能性磁性纳米催化剂。在 2-氨基-4H-色烯衍生物的一锅合成中评估了其催化活性。此外，这种新型磁性纳米催化剂还通过FT-IR、EDX、FE-SEM、TEM VSM、XRD分析等光谱和分析技术进行了表征。